Modifier and Type	Class and Description
pack-priv class	XThis.Handler This is the invocation handler for the dynamic proxy.

Modifier and Type	Field and Description
pack-priv Hashtable<K, V>	interfaces A cache of proxy interface handlers.
pack-priv InvocationHandler	invocationHandler

Access	Constructor and Description
public	XThis(NameSpace namespace, Interpreter declaringInterp)

Modifier and Type	Method and Description
public Object	getInterface(Class<T> clas) Overrides bsh.This.getInterface. Get dynamic proxy for interface, caching those it creates.
public Object	getInterface(Class<T>[] ca) Overrides bsh.This.getInterface. Get dynamic proxy for interface, caching those it creates.
public String	toString() Overrides bsh.This.toString. Returns a string representation of the object.

interfaces	back to summary
pack-priv Hashtable<K, V> interfaces A cache of proxy interface handlers. Currently just one per interface.

invocationHandler	back to summary
pack-priv InvocationHandler invocationHandler

XThis	back to summary
public XThis(NameSpace namespace, Interpreter declaringInterp)

getInterface	back to summary
public Object getInterface(Class<T> clas) Overrides bsh.This.getInterface. Get dynamic proxy for interface, caching those it creates.

getInterface	back to summary
public Object getInterface(Class<T>[] ca) Overrides bsh.This.getInterface. Get dynamic proxy for interface, caching those it creates.

toString	back to summary
public String toString() Overrides bsh.This.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Returns:String a string representation of the object.

pack-priv Class XThis.Handler

Class Inheritance

extends Object
implements InvocationHandler, Serializable

java.lang.Object
bsh.XThis.Handler

All Implemented Interfaces

java.io.Serializable, java.lang.reflect.InvocationHandler

This is the invocation handler for the dynamic proxy.

Notes

Inner class for the invocation handler seems to shield this unavailable interface from JDK1.2 VM... I don't understand this. JThis works just fine even if those classes aren't there (doesn't it?) This class shouldn't be loaded if an XThis isn't instantiated in NameSpace.java, should it?

Constructor Summary

Access	Constructor and Description
pack-priv	Handler()

Method Summary

Modifier and Type Method and Description

Modifier and Type	Method and Description
public Object	invoke(Object the proxy instance that the method was invoked on proxy, Method the `Method` instance corresponding to the interface method invoked on the proxy instance. The declaring class of the `Method` object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through. method, Object[] an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or `null` if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as `java.lang.Integer` or `java.lang.Boolean`. args) Implements java.lang.reflect.InvocationHandler.invoke. Processes a method invocation on a proxy instance and returns the result.
public Object	invokeImpl(Object proxy, Method method, Object[] args)

public Object

invoke(Object

the proxy instance that the method was invoked on

proxy, Method

the Method instance corresponding to the interface method invoked on the proxy instance. The declaring class of the Method object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through.

method, Object[]

an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or null if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as java.lang.Integer or java.lang.Boolean.

args)

Implements java.lang.reflect.InvocationHandler.invoke.

Processes a method invocation on a proxy instance and returns the result.

public Object

invokeImpl(Object proxy, Method method, Object[] args)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Constructor Detail

Handler	back to summary
pack-priv Handler()

Method Detail

invoke back to summary

invoke	back to summary
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable Implements java.lang.reflect.InvocationHandler.invoke. Doc from java.lang.reflect.InvocationHandler.invoke. Processes a method invocation on a proxy instance and returns the result. This method will be invoked on an invocation handler when a method is invoked on a proxy instance that it is associated with. Parameters proxy:Object the proxy instance that the method was invoked on method:Method the `Method` instance corresponding to the interface method invoked on the proxy instance. The declaring class of the `Method` object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through. args:Object[] an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or `null` if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as `java.lang.Integer` or `java.lang.Boolean`. Returns:Object the value to return from the method invocation on the proxy instance. If the declared return type of the interface method is a primitive type, then the value returned by this method must be an instance of the corresponding primitive wrapper class; otherwise, it must be a type assignable to the declared return type. If the value returned by this method is `null` and the interface method's return type is primitive, then a `NullPointerException` will be thrown by the method invocation on the proxy instance. If the value returned by this method is otherwise not compatible with the interface method's declared return type as described above, a `ClassCastException` will be thrown by the method invocation on the proxy instance. Exceptions Throwable: the exception to throw from the method invocation on the proxy instance. The exception's type must be assignable either to any of the exception types declared in the `throws` clause of the interface method or to the unchecked exception types `java.lang.RuntimeException` or `java.lang.Error`. If a checked exception is thrown by this method that is not assignable to any of the exception types declared in the `throws` clause of the interface method, then an `UndeclaredThrowableException` containing the exception that was thrown by this method will be thrown by the method invocation on the proxy instance.

public Object invoke(Object proxy, Method method, Object[] args) throws Throwable

Implements java.lang.reflect.InvocationHandler.invoke.

Doc from java.lang.reflect.InvocationHandler.invoke.

Processes a method invocation on a proxy instance and returns the result. This method will be invoked on an invocation handler when a method is invoked on a proxy instance that it is associated with.

Parameters

proxy:Object: the proxy instance that the method was invoked on
method:Method: the Method instance corresponding to the interface method invoked on the proxy instance. The declaring class of the Method object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through.
args:Object[]: an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or null if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as java.lang.Integer or java.lang.Boolean.

Returns:Object

the value to return from the method invocation on the proxy instance. If the declared return type of the interface method is a primitive type, then the value returned by this method must be an instance of the corresponding primitive wrapper class; otherwise, it must be a type assignable to the declared return type. If the value returned by this method is null and the interface method's return type is primitive, then a NullPointerException will be thrown by the method invocation on the proxy instance. If the value returned by this method is otherwise not compatible with the interface method's declared return type as described above, a ClassCastException will be thrown by the method invocation on the proxy instance.

Exceptions

Throwable:: the exception to throw from the method invocation on the proxy instance. The exception's type must be assignable either to any of the exception types declared in the throws clause of the interface method or to the unchecked exception types java.lang.RuntimeException or java.lang.Error. If a checked exception is thrown by this method that is not assignable to any of the exception types declared in the throws clause of the interface method, then an UndeclaredThrowableException containing the exception that was thrown by this method will be thrown by the method invocation on the proxy instance.

invokeImpl	back to summary
public Object invokeImpl(Object proxy, Method method, Object[] args) throws EvalError

public Class XThis

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

pack-priv Class XThis.Handler

Constructor Summary

Method Summary

Constructor Detail

Method Detail